so far so good with my turbo II, but someone who i consider a reliable source said that I may have to worry if the dent occurs towared the end of the pipe becausee that is where the second chamber is at. I haven't noticed any differenc though. Also, if the the length and the shape/size determine the pipe's tune, then freeziing it to pop the dents out may change the tune because the overall pipe becomes expanded when doing this procedure. Just my 2 cents though. can anyone tell me the difference between the skyline vr12 and the rdlogics turbo 2? I'm using the novarossi N12LL3 engine with 20%fuel, which runs at a temp of 200.